 Abraham was a major éminence grise of Cuban history and is most commonly known as Fabio Grobart, Fabio being a reference to the Roman Consul and guerrilla tactician Quintus Fabius Maximus Verrucosus called "Cunctator (the delayer)", and thus to Fabian socialism.Grobart's actual background is not clearly known and subject to controversy.For instance during the foiled so-called microfaction plot, in which the “old” communists allegedly tried to oust or at least control Castro, Grobart was necessarily involved.